A parasitism that does not involve feeding on the body of the host is:
1. | ectoparasitism | 2. | endoparasitism |
3. | parasitoids | 4. | brood parasitism |
An endoparasite in the human alimentary canal is expected to possess:
I: | Well-developed locomotion |
II: | A means to protect itself against the digestive juices of humans |
III: | A high reproductive capacity |
1. | Only II | 2. | Only I and II |
3. | Only II and III | 4. | I, II and III |
Consider the given two statements:
I: | Parasitoidism is the strategy that is closer to predation than parasitism. |
II: | Parasitoids feed on a living host which they eventually kill, typically before it can produce offspring |
1. | Both I and II are correct and II explains I. |
2. | Both I and II are correct but II does not explain I. |
3. | I is correct and II is incorrect. |
4. | Both I and II are incorrect. |
Identify the correct statements about symbiotic relationships:
I: | in a parasitic relationship, one organism is harmed and the other is benefited. |
II: | coevolution is a feature of many symbiotic relationships. |
III: | a relationship that appears to be commensalism may in fact be mutualistic or parasitic. |
IV: | the most efficient type of parasite is one that kills its host. |
1. | I, II and III only | 2. | I, III and IV only |
3. | II, III and IV only | 4. | I, II, III and IV |
Which of the following is not usually an adaptation for a parasitic mode of life?
1. | Loss of unnecessary sense organs |
2. | Presence of adhesive organs or suckers |
3. | Loss of the digestive system |
4. | Low reproductive capacity |
Assertion (A): | The newly acquired predators and parasites are often more damaging than the older ones. |
Reason (R): | The older ones are familiar and the species getting affected have adjusted. |
1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
3. | (A) is true but (R) is false. |
4. | Both (A) and (R) are false. |